def test_method_perimeter():
    w = Window.constructor1(0, 0, 0, 0)
    w.perimeter()
def test_class_constructor1(x, y, w, h):
    w = Window.constructor1(x, y, w, h)
def test_method_area():
    w = Window.constructor1(0, 0, 0, 0)
    w.area()